Cursing and Opeth...

the only bands I like that use fuck and shit regularly are brutal death bands like Cannibal Corpse and stuff because it suits them and its not like a Korn song whre they just yell it to be "cool"
 
i say that it depends on the lyrics, but then again it doesn't really matter, unless they would do it all the time, then it would be gay, but once in a while, would not be so bad.